Global Mixed-mode Technology G971M 4A Low Dropout Regulator with Enable Features General Description Adjustable Output Low to 0.8V The G971M is a high performance positive voltage Input Voltage as Low as 1.4V and VPP Voltage regulator designed for use in applications requiring 5V very low Input voltage and very low dropout voltage at 400mV Dropout 4A, VO 1.05V up to 4 amps. It operates with a V as low as 1.4V and IN Over Current and Over Temperature Protection VPP voltage 5V with output voltage programmable as Enable Pin low as 0.8V. The G971M features ultra low dropout, Low Reverse Leakage (Output to Input ) ideal for applications where V is very close to V . OUT IN Power SOP-8 (FD) Packages with Thermal Pad Additionally, the G971M has an enable pin to further 2% Output Voltage reduce power dissipation while shutdown. The G971M VO Power OK Signal provides excellent regulation over variations in line, VO Pull Low Resistance when Disable load and temperature. The G971M provides a power OK signal to indicate if the voltage level of VO reaches Applications 92% of its rating value. Motherboards The G971M is available in the power SOP-8 (FD) Peripheral Cards package. It is adjustable using external resistors. Network Cards Set Top Boxes Notebook Computers Ordering Information ORDER TEMP. PACKAGE MARKING NUMBER RANGE (Green) G971MF11U G971M -40C~+85C SOP-8 (FD) Note: F1: SOP-8 (FD) 1: Bonding Code U : Tape & Reel Green : Lead Free / Halogen Free Pin Configuration Typical Application Circuit G971G971MM GG971971MM 10k10k POKPOK VPVPP (P (55VV)) VPVPPP VIVINN GNGNDD 11 88 VEVENN VEVENN VINVIN VIVINN ADADJJ POKPOK 22 77 GNGNDD TheTherrmmaall VOVO VOVO PaPadd ADADJJ VOVO 33 66 VPVPPP R1R1 VOVO 44 55 CC C1C1 VIVINN C2C2 PPPP 11FF 2020FF 2020FF R2R2 TTop Viewop View SOSOPP--8 (FD)8 (FD) * * The Therrmmaal l PPaadd c caan bn bee c coonnnnecected ted to VIto VINN **** C Coonnnnecect Thet Therrmmaal Padl Pad t too gr grouounndd p platlatee wwiillll 0.8 (R0.8 (R1+R1+R22)) hahaveve b beettterter t thherermmal pal peerforrformmaancncee VoVollttss VOVO = = R2R2 RR22<1<120k20k isis r reeccoommmmeennddeedd Ver: 0.3 TEL: 886-3-5788833 Global Mixed-mode Technology G971M Absolute Maximum Ratings (Note 1) Operation Conditions V , V , Input Voltage. . . . . . . . . . . . . . . . . . . . . . . . .7V V Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 1.4V ~5.5V PP IN IN Power Dissipation Internally Limited (Note 2) V Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V~5.5V PP Maximum Junction Temperature. . . . . . . . . . . . . 150C Temperature Range . . . . . . . . . . . .-40C T +85C A Storage Temperature Range . . . . . .-65C T +150C J Reflow Temperature (soldering, 10sec) . . . . . . . 260C Thermal Resistance Junction to Ambient, ( ) JA SOP-8 (FD). . . . . . . . . . . . . . . . . . . . . . . . . . . 143C/W SOP-8 (FD) . . . . . . . . . . . . . . . . . . . . . . 50C/W(Note 4) Thermal Resistance Junction to Case, ( ) JC SOP-8 (FD) . . . . . . . . . . . . . . . . . . . . . . . . . . . .14C/W ESD(HBM) . . . . . . . . . . . . . . . . . . . . . . . . . . 2KV ESD(MM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V ESD(CDM) . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . 1KV Electrical Characteristics V =5V, V =3.3V, V =V , I =10mA, C =22F, C =22F, T =T =25C unless otherwise specified. (Note 3) PP IN EN PP O IN OUT A J PARAMETER SYMBOL CONDITION MIN TYP MAXUNIT VIN Input Voltage Range V 1.4 --- 5.5 V IN Quiescent Current (Ground Current) I V =1.2V, I=0A --- 0.4 1 mA Q O O VPP V Voltage Range V 3 --- 5.5 V PP PP I V=1.2V --- 0.7 1 mA PPH O V Current PP I V=0V --- 30 60 A PPL EN VO Output Voltage V V =V +0.5V,V=2.5V 2.45 2.5 2.55 V O IN O O V =(V +0.5V) to 5V --- 0.1 0.2 % Line Regulation IN O Load Regulation 10mA<I <4A --- 0.2 1 % O Dropout Voltage V I =4A, V=1.05V --- 340 400 mV D O O Short Circuit Current --- 3 --- A V Pull Low Resistance V=0V --- 100 130 O EN ADJ Reference Voltage V V =V 0.784 0.8 0.816 V REF ADJ O Adjust Pin Current I --- 20 100 nA ADJ VEN V Threshold Voltage 0.4 0.8 1.1 V EN V ENTH V Pin Bias Current I V=VPP --- --- 10 A EN ENH EN V Soft Start Time 0.3 0.6 1.2 ms EN T SS POK V Power OK Voltage V --- 92 --- % O THPOK Hysteresis V --- 7 --- % HYPOK Over Temperature Protection Over Temperature T --- 150 --- C OT Over Temperature Hysteresis T --- 30 --- C OTHY Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics. Note 2: The maximum power dissipation is a function of the maximum junction temperature, T total thermal resistance, Jmax , and ambient temperature T . The maximum allowable power dissipation at any ambient temperature is (T -T ) / JA A jmax A . If this dissipation is exceeded, the die temperature will rise above 150C and IC will go into thermal shutdown. JA Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible. Note4: The package is placed on a 2-layer PCB (1oz/1oz) with 3vias.Please refer to Demo Board Footprint section. Ver: 0.3 TEL: 886-3-5788833